Max Launchbrowser…Not launching

hello, I have a problem, within my patch I aim to execute an EXE file that opens MS-dos application. I have the correct file path to the source as I have tested with another file and that works. however when I try to launch this file it simply does no work. It is a python script that is used to parse data and output the results as txt files. Does anyone know why it might not be working?